Classification
330 - Economics
422
658 - General management
260
700 - The arts; fine & decorative arts
76
000 - Computer science, information & general works
72
333 - Economics of land & energy
68
338 - Production
68
600 - Technology
61
340 - Law
57
320 - Political science
56
363 - Other social problems & services
44
380 - Commerce, communications & transportation
42
343 - Military, tax, trade & industrial law
39
610 - Medicine & health
35
580 - Plants (Botany)
32
140 - Specific philosophical schools
28
620 - Engineering & allied operations
28
300 - Social sciences
22
551 - Geology, hydrology & meteorology
21
370 - Education
20
900 - History & geography
20
332 - Financial economics
17
382 - International commerce
17
576 - Genetics & evolution
16
500 - Natural sciences & mathematics
14
800 - Literature & rhetoric
13
581 - Specific topics in natural history
12
630 - Agriculture & related technologies
12
650 - Management & auxiliary services
12
302 - Social interaction
11
100 - Philosophy & psychology
10
381 - Commerce
8
540 - Chemistry & allied sciences
8
720 - Architecture
8
304 - Factors affecting social behavior
7
612 - Human physiology
7
158 - Applied psychology
6
337 - International economics
6
384 - Communications; telecommunication
6
350 - Public administration & military science
5
410 - Linguistics
5
414 - Phonology & phonetics
5
659 - Advertising & public relations
5
745 - Decorative arts
5
301 - Sociology & anthropology
4
306 - Culture & institutions
4
331 - Labor economics
4
400 - Language
4
670 - Manufacturing
4
004 - Data processing & computer science
3
153 - Mental processes & intelligence
3
more ...